Soy-Lemon Flank Steak with Arugula

extra-virgin olive oil

soy sauce or gluten free tamari sauce

fresh lemon juice (from 2 lemons)

packed light-brown sugar

garlic, smashed

flank steak

bunch (about 2 ounces) arugula, leaves torn if large

Coarse salt and freshly ground pepper

Lemon wedges, for serving